ADSP-21371KSWZ-2B Analog Devices Inc, ADSP-21371KSWZ-2B Datasheet - Page 42

• Manufacturer Part Number: ADSP-21371KSWZ-2B
• Description: IC DSP 32BIT 266MHZ 208-LQFP
• Manufacturer: Analog Devices Inc
• Series: SHARC®r
• Type: Floating Pointr

Specifications of ADSP-21371KSWZ-2B

• Package / Case: 208-LQFP
• Interface: DAI, DPI
• Operating Temperature: 0°C ~ 70°C
• Clock Rate: 266MHz
• Non-volatile Memory: ROM (512 kB)
• On-chip Ram: 128kB
• Voltage - I/o: 3.30V
• Voltage - Core: 1.20V
• Mounting Type: Surface Mount
• Svhc: No SVHC (18-Jun-2010)
• Base Number: 21371
• Core Frequency Typ: 266MHz
• Dsp Type: Floating Point
• Mmac: 532
• No. Of Pins: 208
• Interface Type: SPI, UART
• Rohs Compliant: Yes
• Operating Temperature Range: 0°C To +70°C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ADSP-21371/ADSP-21375
Universal Asynchronous Receiver-Transmitter
(UART) Port—Receive and Transmit Timing
Figure 32
The maximum baud rate is PCLK/16 where PCLK = 1/t
shown in
Table 39. UART Port
1
Parameter
Timing Requirement
t
Switching Characteristic
t
UART signals TXD and RXD are routed through DPI P14-1 pins using the SRU.
TXD
RXD
1
1
Figure 32
describes UART port receive and transmit operations.
TRANSMIT
RECEIVE
Incoming Data Pulse Width
Incoming Data Pulse Width
there is some latency between the
UART TRANSMIT
UART RECEIVE
INTERRUPT
INTERRUPT
DPI_P14–1
INTERNAL
DPI_P14–1
INTERNAL
[RxD]
[TxD]
START
Figure 32. UART Port—Receive and Transmit Timing
Rev. C | Page 42 of 52 | September 2009
PCLK
. As
t
t
RXD
TXD
DATA (5–8)
DATA (5–8)
generation of internal UART interrupts and the external data
operations. These latencies are negligible at the data transmis-
sion rates for the UART.
STOP
STOP (1–2)
Min
16t
16t
PCLK
PCLK
–1
–1
UART TRANSMIT BIT SET BY PROGRAM;
UART RECEIVE BIT SET BY DATA STOP;
CLEARED BY WRITE TO TRANSMIT
CLEARED BY FIFO READ
Max
Unit
ns
ns